CN113777160B - Stable scanning device for ultrasonic detection of round steel by manual contact method and use method - Google Patents
Stable scanning device for ultrasonic detection of round steel by manual contact method and use method Download PDFInfo
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- CN113777160B CN113777160B CN202110985794.1A CN202110985794A CN113777160B CN 113777160 B CN113777160 B CN 113777160B CN 202110985794 A CN202110985794 A CN 202110985794A CN 113777160 B CN113777160 B CN 113777160B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 122
- 239000010959 steel Substances 0.000 title claims abstract description 122
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000523 sample Substances 0.000 claims abstract description 166
- 210000001503 joint Anatomy 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a stable scanning device for ultrasonic detection of round steel by a manual contact method and a use method thereof. The lower opening of the cylinder is fixedly connected with the top of the saddle seat, the center of the upper bottom of the cylinder is provided with a screw hole and a hollow bolt which are movably connected, the center of the saddle seat is provided with a through hole which is communicated with the cylinder, a convex ring is arranged in the through hole, and an elastic box and an elastic body in the cylinder are stacked and compressed between the hollow bolt and the convex ring. The elastic box comprises an upper sleeve, a lower sleeve and a first spring, wherein a first through hole is formed in the center of the upper sleeve and communicated with the bolt through hole, and a second through hole is formed in the lower sleeve and used for being embedded into a probe wire interface. The elastic body comprises a probe hoop, a gasket and a second spring, the elastic body surrounds the probe, the probe hoop hoops the probe, and the gasket abuts against the convex ring. The invention realizes the adjustable elastic position and pressure of the probe, and the probe is stable to the round steel pressure in the scanning process, thereby avoiding the influence of the swing of the handheld probe and the pressure fluctuation on scanning signals and improving the detection accuracy and the operation efficiency.
Description
Technical Field
The invention relates to the technical field of material detection, in particular to a stable scanning device for ultrasonic detection of round steel by a manual contact method and a use method.
Background
Ultrasonic flaw detection is an important means for detecting the internal quality of a compact elastic material workpiece such as a metal material, and when flaw detection is performed, a probe transmits ultrasonic waves into the workpiece through a coupling medium, the ultrasonic waves are reflected when encountering a heterogeneous interface in the workpiece, and part of the ultrasonic waves return to the probe to be received and converted into electric signals which are transmitted to an ultrasonic flaw detector and display reflected signals at corresponding positions in the ultrasonic flaw detector, so that the quality condition of the workpiece is judged. The ultrasonic detection by the manual contact method is a commonly used process for detecting the internal quality of round steel, is commonly used for ultrasonic detection of small-batch round steel, and is also an indispensable auxiliary means for defect searching and verification in automatic ultrasonic detection in batches. When the round steel contact method is used for manual ultrasonic detection, the surface of the probe is in line contact with the surface of the round steel, the probe is easy to swing during scanning by the handheld probe, the contact position and the contact force of the probe and the round steel are difficult to keep stable, scanning signals are unstable, the consistency of repeated scanning signals of the same defect is poor, the scanning results of different operators are obviously different, and the detection judgment accuracy is seriously affected. At present, a plurality of special auxiliary tools for ultrasonic detection by a manual contact method exist, however, the existing various auxiliary tools have complex and heavy structures, are inconvenient to operate, and are not suitable for manual ultrasonic stable detection by the contact method of round steel with various specifications.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the ultrasonic detection stable scanning device for the round steel manual contact method and the application method thereof, so that the position stability of the probe surface contacted with the round steel and the pressure stability of the probe and the round steel during manual scanning are realized, the influence of the swing of the handheld probe on the round steel and the pressure fluctuation on the stability and the repeatability of scanning signals is avoided, and the detection accuracy is effectively improved.
The technical aim of the invention is realized by the following technical scheme:
the utility model provides a stable scanning device of manual contact method ultrasonic detection of round steel, includes saddle, hollow bolt, drum and sets up elastic box and the elastomer in the drum, saddle is provided with the probe through-hole that runs through saddle, the probe through-hole communicates with the inside of drum, and the lower extreme of drum with the top fixed connection of saddle, the upper bottom of drum is provided with central screw, the bottom of hollow bolt passes through central screw in drum inside;
the elastic box comprises an upper sleeve, a first spring and a lower sleeve, wherein the lower sleeve is embedded into the upper sleeve and is in clearance fit with the upper sleeve, the first spring is arranged between the upper sleeve and the lower sleeve and is in a compressed state, a first through hole is formed in the top end of the upper sleeve, a second through hole is formed in the bottom end of the lower sleeve, an ultrasonic probe is positioned below the lower sleeve, a probe wire interface at the top end of the ultrasonic probe is embedded into the second through hole, and a probe wire sequentially penetrates through the hollow bolt and the upper sleeve and is connected with the probe wire interface in the elastic box;
the elastic body comprises a probe ferrule, a second spring and a gasket, wherein the probe ferrule is sleeved on the cylindrical surface of the ultrasonic probe and fixedly connected with the ultrasonic probe, the second spring surrounds the ultrasonic probe, the outer diameter of the gasket is in clearance fit with the inner diameter of the probe through hole, and the second spring is arranged between the probe ferrule and the gasket and is in a compressed state.
In one embodiment, the gasket is provided with a gasket flange, and the inner diameter of the gasket flange is in clearance fit with the diameter of the ultrasonic probe.
In one embodiment, the saddle comprises a cylinder butt joint part connected with the cylinder and a round steel contact part contacted with the round steel, a third through hole is formed in the center of the cylinder butt joint part, a fourth through hole is formed in the center of the round steel contact part, a probe through hole which is convenient for an ultrasonic probe to pass through is formed in the third through hole and the fourth through hole, and the gasket is arranged at the fourth through hole.
In one embodiment, the inner wall of the lower opening of the cylinder is provided with an internal thread, the outer wall of the cylinder butt joint part is provided with an external thread, and the cylinder is in threaded connection with the cylinder butt joint part, so that the cylinder is fixedly connected with the saddle.
In one embodiment, the inner diameters of the third through hole and the fourth through hole are the same and are larger than the outer diameter of the ultrasonic probe, a convex ring is arranged on the inner wall of the fourth through hole, the inner diameter of the convex ring is larger than the outer diameter of the ultrasonic probe, and the gasket abuts against the upper end of the convex ring.
In one embodiment, the cross section of the bottom surface of the round steel contact part is in an inverted V shape, the two sides of the inverted V shape are both provided with wear-resistant layers, the wear-resistant layers are detachable, and the vertex angle of the inverted V shape is excessive in a round angle.
The application method of the ultrasonic detection stable scanning device by using the round steel manual contact method comprises the following steps:
rotating the position of the hollow bolt to enable the ultrasonic probe to be flush with the inverted V-shaped top surface of the saddle, and then placing the saddle on the round steel to enable two sides of the inverted V-shaped bottom surface to be in contact with the round steel;
the hollow bolt is adjusted to push into the cylinder, the first spring and the second spring are compressed, and the elastic balance position of the ultrasonic probe is moved downwards until the ultrasonic probe contacts the round steel;
continuously adjusting the hollow bolt to push into the cylinder, wherein the expansion length of the second spring is kept unchanged, the first spring is continuously compressed, and the ultrasonic probe generates pressure on the round steel and gradually increases in the compression process of the first spring;
and adjusting the pushing position of the hollow bolt to enable the ultrasonic probe to be suitable for the pressure of the round steel, and then checking an ultrasonic detection instrument and detecting and scanning the round steel.
In one embodiment, when the round steel specification is smaller, the distance between the cylindrical surface of the round steel and the highest point of the round steel contact part of the saddle is smaller, and the extension length of the ultrasonic probe relative to the highest point of the round steel contact part is smaller when the ultrasonic probe contacts the round steel.
In one embodiment, when the round steel is large in specification, the distance between the cylindrical surface of the round steel and the highest point of the round steel contact part of the saddle is large, and the extension length of the ultrasonic probe relative to the highest point of the round steel contact part is large when the ultrasonic probe contacts the round steel.
In one embodiment, when the bottom gasket faces to one direction, the hollow bolt is rotated, so that the ultrasonic probe can achieve proper pressure to realize stable scanning when detecting round steel in a certain specification range, and the direction of the bottom gasket is changed to adapt to stable scanning of round steel in another specification range under proper pressure of the probe.
In one embodiment, when the ultrasonic probes with different specifications are replaced, the saddle is separated from the cylinder, the ultrasonic probes are replaced, meanwhile, the matched gasket and the probe ferrule are selected, the ultrasonic probes are installed in the cylinder, and the saddle is fixedly connected with the cylinder through threads.
In summary, the invention has the following beneficial effects:
the invention has simple structure, portability, flexibility, stable performance and reliable detection, realizes the longitudinal stable contact between the center line of the probe surface and the round steel during detection scanning, overcomes the influence of unstable position of the probe surface contacted with the round steel caused by the swinging of the probe during handheld probe scanning, and improves the signal stability; the ultrasonic instrument checking and detecting process can be realized, the ultrasonic probe and the round steel pressure are stable and consistent, the influence of the pressure fluctuation of the hand-held probe on the scanning signal fluctuation is eliminated, and the detecting accuracy is improved; the method has the advantages that the consistent signal of repeated scanning can be rapidly and accurately obtained when the repeated scanning and confirmation of the detected defects are carried out in the detection process, and the defect judging efficiency and accuracy are improved;
the invention has large specification range of the round steel to be detected, and the bottom gasket can be respectively suitable for stable scanning of the round steel with the two specification ranges under the proper pressure of the probe when facing to the upper and lower different directions;
the invention is suitable for probes with various diameter specifications, and when the diameter of the probe is changed, the corresponding probe ferrule and the bottom gasket are replaced;
the invention has good economy, the pressure between the probe and the round steel is uniform during scanning, the abrasion of the probe is reduced, and the service life of the probe is correspondingly prolonged; the probe wire of the invention extends into the elastic box to be connected with the probe, which can not cause phenomena of breakage, looseness and the like, and prolongs the service life of the probe wire.
The invention has the advantages of simple, safe and efficient operation, easy learning and easy use, and the size of the invention is suitable for rapid scanning by hand-held operation, thereby improving the detection scanning efficiency; the invention has good popularization and application value, and can be popularized and applied to the manual ultrasonic detection of various shaft, seamless pipes or various cylindrical and circular pipe workpieces by a contact method; the reverse V-shaped bottom of the saddle round steel contact part is changed into a planar base fitting, so that the saddle round steel contact part can be used for manual ultrasonic detection by a contact method of a planar workpiece.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view in the direction A-A of FIG. 1;
fig. 3 is a schematic view of the B-B direction of fig. 1.
In the figure: the device comprises a 1-saddle seat, a 11-barrel butt joint part, a 12-round steel contact part, a 13-wear-resistant layer, a 14-convex ring, a 2-barrel, a 3-hollow bolt, a 4-elastic box, a 41-upper sleeve, a 42-lower sleeve, a 43-first spring, a 5-elastic body, a 51-probe hoop, a 52-second spring, a 53-washer, a 54-washer hem, a 6-ultrasonic probe, a 61-probe wire interface, a 62-probe wire and 7-round steel.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
It should be noted that the terms "upper", "lower", and the like referred to herein are all used for convenience of description only and should not be construed as limiting the technical solution.
The invention provides a stable scanning device for ultrasonic detection of round steel by a manual contact method, which is shown in figures 1-3 and comprises a saddle 1, a hollow bolt 3, a cylinder 2, an elastic box 4 and an elastic body 5, wherein the elastic box 4 and the elastic body 5 are arranged in the cylinder 2;
the saddle seat 1 comprises a barrel butt joint part 11 connected with the barrel 2 and a round steel contact part 12 in contact with the round steel 7, a third through hole is formed in the center of the barrel butt joint part 11, a fourth through hole is formed in the center of the round steel contact part 12, the inner diameters of the third through hole and the fourth through hole are the same and larger than the outer diameter of the ultrasonic probe 6, a convex ring 14 is arranged on the inner wall of the fourth through hole, the inner diameter of the convex ring 14 is larger than the outer diameter of the ultrasonic probe 6, the third through hole and the fourth through hole form a probe through hole which is convenient for the ultrasonic probe 6 to pass through, the probe through hole vertically penetrates through the saddle seat 1, the probe through hole is communicated with the inside of the barrel 2, the lower opening of the barrel 2 is fixedly connected with the barrel butt joint part 11, specifically, an inner thread is arranged on the inner wall of the lower opening of the barrel 2, an outer thread is arranged on the outer wall of the barrel butt joint part 11, and the barrel 2 is in threaded connection with the barrel butt joint part 11, so that the barrel 2 is fixedly connected with the saddle seat 1; the bottom surface of the round steel contact part 12 is in an inverted V shape, the inverted V-shaped structure facilitates the positioning of the invention on the round steel 7, and the two sides of the bottom surface of the round steel contact part 12 are provided with the wear-resistant layers 13, and particularly, the wear-resistant layers 13 are detachable.
The upper bottom of the cylinder 2 is provided with a central screw hole, the bottom end of the hollow bolt 3 is screwed into the cylinder 2 through the central screw hole, the concrete structure of the hollow bolt 3 is that the outer wall of the hollow bolt 3 is provided with external threads, the middle of the hollow bolt 3 is provided with a round hole which is convenient for threading, and the round hole is led into the cylinder 2;
the elastic box 4 comprises an upper sleeve 41, a first spring 43 and a lower sleeve 42, wherein the upper sleeve 41 is sleeved outside the lower sleeve 42, the outer circle of the upper sleeve 41 is in clearance fit with the inner circle of the cylinder 2, the first spring 43 is arranged between the upper sleeve 41 and the lower sleeve 42 and is in a compressed state, the whole formed by the upper sleeve 41 and the lower sleeve 42 can be elastically stretched out and drawn back by the first spring 43, the top end of the upper sleeve 41 is provided with a first through hole, the bottom end of the lower sleeve 42 is provided with a second through hole, the ultrasonic probe 6 is positioned below the lower sleeve 42, a probe wire interface 61 at the top end of the ultrasonic probe 6 is embedded into the second through hole, and a probe wire 62 sequentially penetrates through the hollow bolt 3 and the upper sleeve 41 to be connected with the probe wire interface 61;
the elastic body 5 comprises a gasket 53, a probe hoop 51 and a second spring 52, wherein the gasket 53 is arranged on the convex ring 14, the outer diameter of the gasket 53 is in clearance fit with the inner diameter of the through hole of the cylinder probe, the inner wall of the gasket 53 is in clearance fit with the outer circle of the ultrasonic probe 6, the probe hoop 51 is sleeved on the upper part close to the ultrasonic probe 6 and fixedly connected with the ultrasonic probe 6, the second spring 52 is sleeved outside the ultrasonic probe 6, the second spring 52 is arranged between the probe hoop 51 and the gasket 53 and is in a compressed state, and the bottom end of the second spring 52 abuts against the gasket 53, so that the top end of the ultrasonic probe 6 abuts against the bottom end of the lower sleeve 42 by the second spring 52, and the ultrasonic probe 6 is in an elastic balance position of the first spring 43 and the second spring 52.
Further, the washer 53 is provided with a washer flange 54, as shown in the enlarged portion of the drawing, the washer flange 54 having an inner diameter that is in clearance fit with the probe diameter.
The invention can detect round steel 7 with different specifications, is also suitable for ultrasonic probes 6 with different specifications, and is specifically as follows:
when the present invention is used to inspect smaller gauge round steel 7, the ultrasonic probe 6 is reduced in extension from the top surface of the round steel contact portion 12 of the horse saddle 1 because the diameter of the round steel 7 is smaller and the distance of the round steel 7 from the top surface of the round steel contact portion 12 is smaller.
When the present invention is used to inspect a large-sized round steel 7, the distance between the round steel 7 and the top surface of the round steel contact portion 12 of the saddle 1 is large due to the large diameter of the round steel 7, so that the protruding length of the ultrasonic probe 6 with respect to the top surface of the round steel contact portion 12 is increased.
It will be appreciated that the purpose of adjusting the extension length of the ultrasonic probe 6 relative to the top surface of the round steel contact portion 12 is to make the ultrasonic probe 6 contact with the surface of the round steel 7, and to ensure that the pressure of the ultrasonic probe 6 on the round steel 7 is appropriate, so as to achieve reliable scanning of the round steel 7 and avoid damaging the ultrasonic probe 6.
When the ultrasonic probes 6 with different diameters need to be replaced, the threaded interfaces of the saddle 1 and the cylinder body are unscrewed, the original ultrasonic probes 6 can be taken down by disassembling the probe wire and the probe wire interface 61, meanwhile, the elastic body 5 is disassembled, the new ultrasonic probes 6 and the probe hoop 51 are replaced, the probe wire interface 61 is connected with the probe wire 62, meanwhile, the gasket 53 matched in the saddle 1 is replaced, the new ultrasonic probes 6 and the elastic body 5 are placed in the cylinder 2, and finally, the saddle 1 is fixedly connected with the cylinder 2, so that the replacement of the ultrasonic probes 6 with different specifications is completed.
The invention also provides a using method of the ultrasonic detection stable scanning device by using the round steel manual contact method, which comprises the following steps:
rotating the hollow bolt 3 to enable the ultrasonic probe 6 to be flush with the inverted V-shaped top surface of the saddle 1, and then placing the saddle 1 on the round steel 7 to enable two sides of the inverted V-shaped to be in contact with the round steel 7;
the hollow bolt 3 is adjusted to push into the cylinder 2, the first spring 43 and the second spring 52 are compressed, and the elastic balance position of the ultrasonic probe 6 moves downwards until the ultrasonic probe 6 contacts the round steel 7;
continuously adjusting the hollow bolt 3 to push into the cylinder 2, wherein the expansion length of the second spring 52 is kept unchanged, the first spring 43 is continuously compressed, and the ultrasonic probe 6 generates pressure on the round steel 7 and gradually increases in the compression process of the first spring 43;
the pushing position of the hollow bolt 3 is adjusted to enable the ultrasonic probe 6 to be suitable for the pressure of the round steel 7, and checking of an ultrasonic detecting instrument and detection and scanning of the round steel 7 are carried out.
In one embodiment, when the round steel 7 is smaller in size, the cylindrical surface of the round steel 7 is smaller in distance from the top surface of the round steel contact portion 12 of the saddle 1, and the ultrasonic probe 6 contacts the round steel 7 with smaller extension length relative to the top surface of the round steel contact portion 12.
In one embodiment, when the round steel 7 is larger in size, the cylindrical surface of the round steel 7 is larger in distance from the top surface of the round steel contact part 12 of the saddle 1, and the ultrasonic probe 6 contacts the round steel 7 and is larger in extension length relative to the top surface of the round steel contact part 12.
In one embodiment, when the bottom washer 53 faces to one direction, the hollow bolt 3 is rotated, so that the ultrasonic probe 6 can achieve proper pressure to realize stable scanning when detecting round steel 7 in a certain specification range, and the direction of the bottom washer 53 is changed to adapt to stable scanning when round steel 7 in another specification range is subjected to proper pressure of the probe.
In one embodiment, when the ultrasonic probe 6 with different specifications is replaced, the saddle 1 is separated from the cylinder 2, the ultrasonic probe 6 is replaced, meanwhile, the matched gasket 53 and the probe hoop 51 are selected, the ultrasonic probe 6 is installed in the cylinder 2, and the saddle 1 and the cylinder 2 are fixedly connected through threads.
The ultrasonic probe 6 is stable and accurate to the detection scanning signal of the round steel 7, can enable the center line of the end face of the ultrasonic probe 6 to be in longitudinal stable contact with the round steel 7, realizes that the pressure stability of the ultrasonic probe 6 and the round steel 7 is consistent when the ultrasonic instrument is checked and the detection scanning is performed, eliminates the influence of the swing of a handheld probe and the pressure fluctuation on the stability of the scanning signal, and improves the detection accuracy; and the signals are stable and consistent when the scanning and the confirmation are repeated on the detected defects, so that the defect judging efficiency and accuracy are improved.
The ultrasonic probe 6 and the round steel 7 have uniform pressure, so that the abrasion of the ultrasonic probe 6 is reduced, and the service life of the ultrasonic probe 6 is correspondingly prolonged. The probe wire 62 of the invention extends into the elastic box 4 to be connected with the probe wire interface 61, which can not cause phenomena of breakage, looseness and the like, and prolongs the service life of the probe wire 62.
The invention has good popularization and application value, and can be popularized and applied to the manual ultrasonic detection of various shaft, seamless pipes or various cylindrical and circular pipe workpieces by a contact method. It will be appreciated that the V-shaped concave surface of the round steel contact 12 of the present invention may be used for planar workpiece inspection when the concave surface is replaced with a horizontal surface.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (7)
1. The utility model provides a stable scanning device of manual contact method ultrasonic detection of round steel, its characterized in that includes saddle (1), hollow bolt (3), drum (2) and elastic box (4) and elastomer (5) of setting in drum (2), saddle (1) are provided with the probe through-hole that runs through saddle (1), the inside intercommunication of probe through-hole and drum (2), just the lower extreme of drum (2) with the top fixed connection of saddle (1), the upper bottom of drum (2) is provided with central screw, the bottom of hollow bolt (3) is through the inside screw in drum (2);
the elastic box (4) comprises an upper sleeve (41), a first spring (43) and a lower sleeve (42), wherein the lower sleeve (42) is embedded into the upper sleeve (41) and is in clearance fit with the upper sleeve (41), the first spring (43) is arranged between the upper sleeve (41) and the lower sleeve (42) and is in a compressed state, a first through hole is formed in the top end of the upper sleeve (41), a second through hole is formed in the bottom end of the lower sleeve (42), the ultrasonic probe (6) is located below the lower sleeve (42), a probe wire interface (61) at the top end of the ultrasonic probe (6) is embedded into the second through hole, and a probe wire (62) sequentially penetrates through the hollow bolt (3) and the upper sleeve (41) to be connected with the probe wire interface (61) in the elastic box (4);
the elastic body (5) comprises a probe hoop (51), a second spring (52) and a gasket (53), wherein the probe hoop (51) is sleeved on the cylindrical surface of the ultrasonic probe (6) and is fixedly connected with the ultrasonic probe (6), the second spring (52) surrounds the ultrasonic probe (6), the outer diameter of the gasket (53) is in clearance fit with the inner diameter of the probe through hole, and the second spring (52) is arranged between the probe hoop (51) and the gasket (53) and is in a compressed state;
the saddle seat (1) comprises a cylinder butt joint part (11) connected with the cylinder (2) and a round steel contact part (12) contacted with the round steel (7), a third through hole is formed in the center of the cylinder butt joint part (11), a fourth through hole is formed in the center of the round steel contact part (12), a probe through hole which is convenient for an ultrasonic probe (6) to pass through is formed by the third through hole and the fourth through hole, the gasket (53) is arranged at the fourth through hole, the cross section of the bottom surface of the round steel contact part (12) is in an inverted V shape, wear-resistant layers (13) are arranged on two sides of the bottom surface of the inverted V shape, and the vertex angle of the inverted V shape is excessive in a round angle;
the inner diameters of the third through hole and the fourth through hole are the same and are larger than the outer diameter of the ultrasonic probe (6), a convex ring (14) is arranged on the inner wall of the fourth through hole, the inner diameter of the convex ring (14) is larger than the outer diameter of the ultrasonic probe (6), and the gasket (53) props against the upper end of the convex ring (14).
2. The ultrasonic detection stable scanning device for round steel manual contact method according to claim 1, wherein the gasket (53) is provided with a gasket folded edge (54), and the inner diameter of the gasket folded edge (54) is in clearance fit with the diameter of the ultrasonic probe (6).
3. The ultrasonic detection stable scanning device of the round steel manual contact method according to claim 1, wherein an inner thread is arranged on the inner wall of the lower opening of the cylinder (2), an outer thread is arranged on the outer wall of the cylinder butt joint part (11), and the cylinder (2) is in threaded connection with the cylinder butt joint part (11) so that the cylinder (2) is fixedly connected with the saddle seat (1).
4. The application method of the ultrasonic detection stable scanning device for the round steel manual contact method is applicable to the ultrasonic detection stable scanning device for the round steel manual contact method as claimed in claim 1, and is characterized in that,
rotating the hollow bolt (3) to enable the bottom surface of the ultrasonic probe (6) to be level with the inverted V-shaped top surface of the saddle seat (1), and then placing the saddle seat (1) on the round steel (7) to enable the two sides of the inverted V-shaped bottom surface to be in contact with the round steel (7);
the hollow bolt (3) is adjusted to push into the cylinder (2), the first spring (43) and the second spring (52) are compressed, and the elastic balance position of the ultrasonic probe (6) moves downwards until the ultrasonic probe (6) contacts the round steel (7);
continuously adjusting the hollow bolt (3) to push into the cylinder (2), wherein the expansion length of the second spring (52) is kept unchanged, the first spring (43) is continuously compressed, and the ultrasonic probe (6) generates pressure on the round steel (7) and gradually increases in the compression process of the first spring (43);
the pushing position of the hollow bolt (3) is adjusted to enable the ultrasonic probe (6) to be suitable for the pressure of the round steel (7), and then the check of an ultrasonic detection instrument and the detection scanning of the round steel (7) are carried out.
5. The use method according to claim 4, wherein when the specification of the round steel (7) is smaller, the distance between the cylindrical surface of the round steel (7) and the highest point of the round steel contact part (12) of the saddle (1) is smaller, and the extension length of the ultrasonic probe (6) contacting the round steel (7) is smaller relative to the highest point of the round steel contact part (12);
when the specification of the round steel (7) is larger, the distance between the cylindrical surface of the round steel (7) and the highest point of the round steel contact part (12) of the saddle (1) is larger, and the extension length of the highest point of the ultrasonic probe (6) relative to the round steel contact part (12) is larger when the ultrasonic probe contacts the round steel (7).
6. The use method according to claim 5, wherein when the bottom washer (53) faces one direction, the hollow bolt (3) is rotated to enable the ultrasonic probe (6) to achieve stable scanning of appropriate pressure when detecting round steel (7) in a certain specification range, and the direction of the bottom washer (53) is changed to adapt to stable scanning of round steel (7) in another specification range under appropriate pressure of the probe.
7. The use method according to claim 4, characterized in that when the ultrasonic probe (6) with different specifications is replaced, the saddle (1) is separated from the cylinder (2), the ultrasonic probe (6) is replaced, the matched gasket (53) and the probe hoop (51) are selected, the ultrasonic probe (6) is installed in the cylinder (2), and the saddle (1) is fixedly connected with the cylinder (2) in a threaded manner.
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